feat: 添加附件（下载管理）分类分页/详情/新增/更新/设置排序值/删除接口

app/admin/model/v1/AttachmentCategoryModel.php

@@ -0,0 +1,27 @@
+<?php
+declare (strict_types = 1);
+
+namespace app\admin\model\v1;
+
+use app\common\model\AttachmentCategoryBaseModel;
+use think\model\concern\SoftDelete;
+
+/**
+ * 附件（下载管理）分类模型
+ * @mixin \think\Model
+ */
+class AttachmentCategoryModel extends AttachmentCategoryBaseModel
+{
+    // 启用软件删除
+    use SoftDelete;
+    // 软删除字段
+    protected $deleteTime = 'deleted_at';
+    // 自动写入时间格式
+    protected $autoWriteTimestamp = 'datetime';
+    
+    // 关联附件
+    public function attachment()
+    {
+        return $this->hasMany(AttachmentModel::class, 'category_id', 'id');
+    }
+}